What is the brake lock of a truck crane?
Small gap slowly leak, can not be on the various agencies or hydraulic motor hydraulic cylinder to achieve effective locking, which prone to heavy lifting down, the boom shrinkage, increased range, the sinking of the accident, ranging from the car crane can not
Normal work, heavy lead to vehicle overturning, casualties and other vicious accidents
Car crane crane valve and the valve body between the use of more than the gap seal, in its own gravity and lifting load under the dual role of gravity, the brake when the high-pressure oil often through the valve spool and valve body between the
